Craftx.org is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn more

Best Thermal Underwear In 2023 - Value For Money

Thermal underwear are a necessity for anyone who spends any time outdoors in cold weather. Whether you're hitting the slopes or spending time out shoveling snow, you need to have some type of thermal underwear on hand so that your body can function at its best. We've sent thirteen testers out in the winter to do all sorts of activities and we found a variety of styles, fabrics, and cuts to keep all types of bodies warm. Our picks will keep you comfortable all winter long.

Anete Craftx
  Mar 23, 2023 8:37 AM
Advertiser Disclosure

You’re our first priority.
Every time.

Craftx is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate we earn from qualifying purchases. Read more

Our Top Picks

Best Overall: Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather

The thermal underwear will keep you comfortable and dry. Fleece lining ensures a warm, comfortable experience. You'll stay warm all winter long.

Best Budget: DEVOPS 2 Pack Men's Thermal Long Sleeve Compression Shirts

Stay healthy and fit with these thermal compression shirts, prevent body odor and keep you cool during summer weather. Machine washable and wrinkle-resistant.

Best Value: WEERTI Thermal Underwear for Men, Long Johns Base Layer Fleece Lined Top Bottom

Thermal underwear help keep you warm during the cold winter.

Editor's Choice: Thermajane Long Johns Thermal Underwear for Women Fleece Lined Base Layer Pajama Set Cold Weather

Thermajane Long Johns thermal underwear are perfect for cold weather wear. Machine washable and freeze-dried, these thermal underwear are long lasting.

Compare Products

Showing  1 - 10  in  16 results
RANKING LIST  |  SORT BY SCORES
1
Fruit of the Loom Men's Recycled Premium Waffle Thermal Underwear Long Johns Bottom (1, 2, 3, and 4 Packs), Greystone Heather, Large
Fruit of the Loom Men's Recycled Premium Waffle Thermal Underwear Long Johns Bottom (1, 2, 3, and 4 Packs), Greystone Heather, Large
View on Amazon
  • SCORE
    9.2
    AI Score

    AI Score is a ranking system developed by our team of experts. It from 0 to 10 are automatically scored by our Craftx based upon the data collected. This score has no relationship or impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Fruit of the Loom
  • Reinforced flat seam construction
  • Traditional full length thermal pant made from U.S. sourced cotton and recycled polyester  more
2
Fruit of the Loom Men's Recycled Premium Waffle Thermal Underwear Long Johns Bottom (1, 2, 3, and 4 Packs), Navy, X-Large
Fruit of the Loom Men's Recycled Premium Waffle Thermal Underwear Long Johns Bottom (1, 2, 3, and 4 Packs), Navy, X-Large
View on Amazon
  • SCORE
    9.2
    AI Score

    AI Score is a ranking system developed by our team of experts. It from 0 to 10 are automatically scored by our Craftx based upon the data collected. This score has no relationship or impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Fruit of the Loom
  • Reinforced flat seam construction
  • Provides insulation and warmth in cold to moderately cold conditions  more
3
Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather (Small, Black)
Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather (Small, Black)
View on Amazon
  • SCORE
    9.2
    AI Score

    AI Score is a ranking system developed by our team of experts. It from 0 to 10 are automatically scored by our Craftx based upon the data collected. This score has no relationship or impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Thermajohn
  • Heat Retention: When it comes to warmth and everyday wear, these long johns for men is designed specifically for you to stay protected from the cold.
  • Ultra Soft Fleece: Designed with a fleece lining & quality material, these ultra soft mens thermal underwear set will keep you feeling comfortable throughout the day.  more
4
DEVOPS Women's 2 Pack Thermal Turtle Long Sleeve Shirts Compression Baselayer Tops (X-Small, Black/Red)
DEVOPS Women's 2 Pack Thermal Turtle Long Sleeve Shirts Compression Baselayer Tops (X-Small, Black/Red)
View on Amazon
  • SCORE
    9.2
    AI Score

    AI Score is a ranking system developed by our team of experts. It from 0 to 10 are automatically scored by our Craftx based upon the data collected. This score has no relationship or impact from any manufacturer or sales agent websites. Learn more

  • Brand
    DEVOPS
  • 【Ultra Soft & Warm】 Thermal tech fleece fabric of the baselayer caresses the skin so naturally providing maximum comfort and softness.
  • 【Micro Fleece Lined】 90% Polyester, 10% Spandex.  more
5
DEVOPS 2 Pack Men's Thermal Long Sleeve Compression Shirts (2X-Large, Black/Charcoal)
DEVOPS 2 Pack Men's Thermal Long Sleeve Compression Shirts (2X-Large, Black/Charcoal)
View on Amazon
  • SCORE
    9.2
    AI Score

    AI Score is a ranking system developed by our team of experts. It from 0 to 10 are automatically scored by our Craftx based upon the data collected. This score has no relationship or impact from any manufacturer or sales agent websites. Learn more

  • Brand
    DEVOPS
  • 【Versatile Performance】 Thermal Tops with ultra soft hand feel and heat-retention is a perfect option during various indoor activities, outdoor excursion and recreational activities.
  • 【Ultra Soft & Warm】 Thermal tech fleece fabric of the baselayer caresses the skin so naturally providing maximum comfort and softness.  more
6
DEVOPS Women's 2 Pack Thermal Long Sleeve Shirts Compression Baselayer Tops (X-Small, Black/Heather Flower)
DEVOPS Women's 2 Pack Thermal Long Sleeve Shirts Compression Baselayer Tops (X-Small, Black/Heather Flower)
View on Amazon
  • SCORE
    9.2
    AI Score

    AI Score is a ranking system developed by our team of experts. It from 0 to 10 are automatically scored by our Craftx based upon the data collected. This score has no relationship or impact from any manufacturer or sales agent websites. Learn more

  • Brand
    DEVOPS
  • 【Ultra Soft & Warm】 Thermal tech fleece fabric of the baselayer caresses the skin so naturally providing maximum comfort and softness.
  • 【Versatile Performance】 Thermal Tops with ultra soft hand feel and heat-retention is a perfect option during various indoor activities, outdoor excursion and recreational activities.  more
7
Thermajane Long Johns Thermal Underwear for Women Fleece Lined Base Layer Pajama Set Cold Weather (X-Small, Royal Blue)
Thermajane Long Johns Thermal Underwear for Women Fleece Lined Base Layer Pajama Set Cold Weather (X-Small, Royal Blue)
View on Amazon
  • SCORE
    9.2
    AI Score

    AI Score is a ranking system developed by our team of experts. It from 0 to 10 are automatically scored by our Craftx based upon the data collected. This score has no relationship or impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Thermajane
  • Layer Up: When it comes to style and comfort, our womens thermals is the ideal base layer to wear throughout your day.
  • Ultra Soft: Our thermals for women are lined with fleece for extra softness against your skin. They’ll protect you from the cold for added comfort.  more
8
WEERTI Thermal Underwear for Men, Long Johns Base Layer Fleece Lined Top Bottom (Black XS)
WEERTI Thermal Underwear for Men, Long Johns Base Layer Fleece Lined Top Bottom (Black XS)
View on Amazon
  • SCORE
    9.2
    AI Score

    AI Score is a ranking system developed by our team of experts. It from 0 to 10 are automatically scored by our Craftx based upon the data collected. This score has no relationship or impact from any manufacturer or sales agent websites. Learn more

  • Brand
    WEERTI
  • [PERFECT DESIGN FOR MAN]：Mens long johns winter base layer perfect for use underneath formal or casual attire, or they can be worn as comfy pajamas on chilly nights. When going out to jogger, run, bike, dress up this set under your clothing to keep warm and cozy in cold climates or bad weather.
  • [100% SATISFACTION GUARANTEE]: We promise these are the most comfortable long johns for men thermal sets you will ever own. If you don't love your thermal underwear set for any reason, let us know and we'll refund your money back or send you a replacement! That is how confident we are that you will love it!  more
9
Thermajane Long Johns Thermal Underwear for Women Fleece Lined Base Layer Pajama Set Cold Weather (Medium, Black)
Thermajane Long Johns Thermal Underwear for Women Fleece Lined Base Layer Pajama Set Cold Weather (Medium, Black)
View on Amazon
  • SCORE
    9.2
    AI Score

    AI Score is a ranking system developed by our team of experts. It from 0 to 10 are automatically scored by our Craftx based upon the data collected. This score has no relationship or impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Thermajane
  • Layer Up: When it comes to style and comfort, our womens thermals is the ideal base layer to wear throughout your day.
  • Heat Retention: Thermajane womens thermal underwear keeps your body heat from escaping. They provide extra warmth and coziness to make a perfect everyday baselayer.  more
10
Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather (Medium, Black)
Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather (Medium, Black)
View on Amazon
  • SCORE
    9.2
    AI Score

    AI Score is a ranking system developed by our team of experts. It from 0 to 10 are automatically scored by our Craftx based upon the data collected. This score has no relationship or impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Thermajohn
  • 4 Way Stretch: Made with stretchable material, these thermals for men allows you freedom of movement with no chafing or bunching up when you move.
  • Ultra Soft Fleece: Designed with a fleece lining & quality material, these ultra soft mens thermal underwear set will keep you feeling comfortable throughout the day.  more

Last update on 2023-03-23 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

5
2 ratings

FAQs

Which thermal underwear is the warmest?

Thermal underwear featuring merino wool are the warmest. They are also the most comfortable to wear.

What is the best thermal base layer for extreme cold?

A thermal base layer is the layer of clothing that is worn underneath other clothing to keep you warm. The best base layer for extreme cold is a merino wool blend, as it has a high insulation value and wicks sweat away from your skin.

Should thermals be tight or loose?

There is no definitive answer to this question as it depends on the individual's specific needs. Generally speaking, though, thermals should be tight - that is, they should be tightly bound together so that they don't move around. However, some people prefer to have a little bit of space between their layers - this is typically referred to as "loose" thermals. This is primarily because they feel more comfortable and secure overall.

What are the warmest thermals to buy?

The warmest thermals to buy are merino wool. Merino wool is a high quality, natural fiber that can be heated to create a comfortable temperature.

Conclusion

Thermal underwear are a great way to be active and keep your body warm. There are many different kinds of thermal underwear, so find what is best for you. Do not forget to get some!

Anete Craftx
Anete Craftx

I love yoga and gym! I am currently a yoga teacher for a fitness center.